3221761 has 2 divisors, whose sum is σ = 3221762. Its totient is φ = 3221760.

The previous prime is 3221753. The next prime is 3221783. The reversal of 3221761 is 1671223.

It is an a-pointer prime, because the next prime (3221783) can be obtained adding 3221761 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3168400 + 53361 = 1780^2 + 231^2 .

It is an emirp because it is prime and its reverse (1671223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3221761 - 2³ = 3221753 is a prime.

It is a super-2 number, since 2×3221761² = 20759487882242, which contains 22 as substring.

It is a Chen prime.

3221761 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3221731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610880 + 1610881.

It is an arithmetic number, because the mean of its divisors is an integer number (1610881).

Almost surely, 2^3221761 is an apocalyptic number.

It is an amenable number.

3221761 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221761 is an equidigital number, since it uses as much as digits as its factorization.

3221761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 3221761 is about 1794.9264608891. The cubic root of 3221761 is about 147.6945398203.

Adding to 3221761 its reverse (1671223), we get a palindrome (4892984).

The spelling of 3221761 in words is "three million, two hundred twenty-one thousand, seven hundred sixty-one".